Me: The shell is a bit wrinkly. I think we need to give the chickens some more shell grit.

Minty[admonishing]: don't say shell grit!

Me[surprised]: why can't I say shell grit?

Minty [in an overly dramatised whisper while pointing to the egg]: because this is the shell grit

(Just a quick explanation for those of you for whom this conversation made no sense. Chickens need to be given shell grit to help their egg shells develop properly. This can be given in the form of crushed up egg shells but you have to be careful to make sure the pieces are very small so they don't start recognising their own eggs as food!)